Retinal Meaning
/ˈɹɛt.ɪn.əl/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
adjOf or pertaining to the retina.
nounA yellow to orange aldehyde derived from vitamin A that is formed from rhodopsin by the action of light and in combination with proteins forms the visual pigments of the retinal rods and cones.
Sentence Examples
I had retinal detachment five years ago.
3-D glasses make use of retinal disparity.
CEFR Practice Quiz
The ____ layer in the eye turns light into signals for the brain.
CEFR Practice Quiz (Alternate)
The ____ scan confirmed that the patient had early signs of diabetic damage to the blood vessels.
Word Origin & History
Etymology tree English retina Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English retinal From retina + -al (“of or pertaining to”).
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CEFR Practice Quiz
The ____ layer in the eye turns light into signals for the brain.
CEFR Practice Quiz (Alternate)
The ____ scan confirmed that the patient had early signs of diabetic damage to the blood vessels.